Plumbing permits in City of Kent: fees, timeline & requirements (2026)
Everything you need to know about pulling a plumbing permit in City of Kent, Washington — when one is required, what it costs, how long review takes, what documents are required, and which inspections you can expect. Cited to Kent uses MyKent permits portal..
Permit required?
Yes — see threshold below
Permit fee
Plumbing permit fees by fixture count. Standard residential ~$80-$250. Apply via https://kentwa.gov/permits. Kent uses MyKent permits portal.
Review timeline
—
When does a plumbing need a permit in City of Kent?
WAC 51-56 (2021 UPC) requires plumbing permit for installation, replacement, or relocation of any plumbing fixture, water heater, or piping. Like-for-like faucet replacement is exempt.
Required submittals
- fixture count + DFU calc for repipes
- water heater specs
- sewer line plan if site work involved
Inspection sequence
- rough-in / pressure test
- final
Contractor specialties needed
plumbing
Notes & caveats
Water heater: T&P relief, expansion tank required if pressure >80psi or check valve installed. Sewer line: cleanouts at every 100ft + change of direction. Backwater valve required in flood zones.
How to apply
- 1. Confirm your parcel's zoning & overlays. Run an address lookup on the main permits page — we'll pull your specific lot polygon, zoning, setbacks, and any shoreline/ECA/historic overlays.
- 2. Assemble submittals (3).
- 3. Submit through the city portal: Kent uses MyKent permits portal. ↗
- 4. Track review (typical: —). Respond to reviewer comments promptly.
- 5. Pay issuance fees (Plumbing permit fees by fixture count. Standard residential ~$80-$250. Apply via https://kentwa.gov/permits. Kent uses MyKent permits portal.) and pick up the permit. Inspection card travels with the job.